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1.
A more tasteful substitute for "the N-word", used to show comraderie rather than feelings of racial inferiority.
Fight the power, you bitch-ass ninjaz!
by djxplicit April 19, 2005
 
2.
a more appropriate substitute for the common greeting "my nigga." It can be used by anyone without that person having to worry about offending anyone due to cultural or racial reasons.
whats up my ninja?
by dermanatural May 10, 2009
 
3.
An asian friend who sticks with you no matter how bad situations get. It's the asian version of "my nigga".
Hey hey! Long time no see my ninja!
by MisterRickster October 30, 2011
 
4.
Term of endearment to a friend. A salutation of sorts to friends.
What up my ninja!
Damn my ninja calm down.
by Adeate January 19, 2011
 
5.
Term of endearment from one person to another, usually of African American descent.
"What's up my Ninja?" The word Ninja replaces the word Nigga'.
by BIGIS February 04, 2005